* {
    margin: 0;
    padding: 0;
}

body {
    background: #000;
}

.box {
    width: 800px;
    height: 600px;
    background: #000;
    margin: 50px auto;
    padding-top: 50px;
    position: relative;
}

.contrast {
    width: 100%;
    height: 100%;
    background-color: #000;
    overflow: hidden;
    filter: contrast(15) hue-rotate(0);
    position: relative;
    animation: hueRotate 6s linear infinite;
}

@keyframes hueRotate {
    0% {
        filter: contrast(15) hue-rotate(0);
    }

    100% {
        filter: contrast(15) hue-rotate(360deg);
    }
}

.circle {
    width: 300px;
    height: 300px;
    position: absolute;
    top: 10px;
    left: 50%;
    margin-left: -150px;
    box-sizing: border-box;
    filter: blur(8px);
    animation: circleRotate 6s linear infinite;

}

.circle::before {
    content: "";
    height: 200px;
    width: 200px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(0);
    background: #00ff6f;
    border-radius: 42% 38% 62% 49% / 45%;

}

.circle::after {
    content: "";
    width: 176px;
    height: 178px;
    background: #000;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes circleRotate {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.bubble-home {
    width: 150px;
    height: 50px;
    background: #00ff6f;
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translate(-50%, 0);
    border-radius: 100px 100px 0 0;
    filter: blur(5px);
}

.number {
    width: 200px;
    height: 200px;
    text-align: center;
    z-index: 9;
    font-size: 30px;
    line-height: 200px;
    color: white;
    position: absolute;
    left: 50%;
    top: 18%;
    transform: translate(-50%, 0%);
    
}

.bubble {
    background: #00ff6f;
    position: absolute;
    bottom: 0;
    border-radius: 100px 100px 0 0;
    filter: blur(5px);
    animation: moveUp ease-in-out infinite;
}

.bubble:nth-child(1) {
    width: 20px;
    height: 20px;
    left: 50%;
    animation-duration: 4s;
    animation-delay: 2s;
}

.bubble:nth-child(2) {
    width: 22px;
    height: 22px;
    left: 54%;
    animation-duration: 4.2s;
    animation-delay: 4s;
}

.bubble:nth-child(3) {
    width: 24px;
    height: 24px;
    left: 45%;
    animation-duration: 3s;
    animation-delay: 1s;
}

.bubble:nth-child(4) {
    width: 20px;
    height: 22px;
    left: 54%;
    animation-duration: 5s;
    animation-delay: 0s;
}

.bubble:nth-child(5) {
    width: 22px;
    height: 22px;
    left: 52%;
    animation-duration: 3.5s;
    animation-delay: 5s;
}

.bubble:nth-child(6) {
    width: 20px;
    height: 20px;
    left: 50%;
    animation-duration: 4.7s;
    animation-delay: 1.2s;
}

.bubble:nth-child(7) {
    width: 22px;
    height: 22px;
    left: 54%;
    animation-duration: 2.5s;
    animation-delay: 3.5s;
}

.bubble:nth-child(8) {
    width: 24px;
    height: 24px;
    left: 51%;
    animation-duration: 5.6s;
    animation-delay: 4.2s;
}

.bubble:nth-child(9) {
    width: 26px;
    height: 26px;
    left: 42%;
    animation-duration: 5.2s;
    animation-delay: 4s;
}

.bubble:nth-child(10) {
    width: 26px;
    height: 22px;
    left: 54%;
    animation-duration: 3.8s;
    animation-delay: 4.3s;
}

.bubble:nth-child(11) {
    width: 22px;
    height: 22px;
    left: 42%;
    animation-duration: 4.2s;
    animation-delay: 0.3s;
}

.bubble:nth-child(12) {
    width: 24px;
    height: 24px;
    left: 46%;
    animation-duration: 4.6s;
    animation-delay: 2.0s;
}

.bubble:nth-child(13) {
    width: 22px;
    height: 22px;
    left: 48%;
    animation-duration: 3.8s;
    animation-delay: 3.2s;
}

.bubble:nth-child(14) {
    width: 26px;
    height: 22px;
    left: 55%;
    animation-duration: 5.2s;
    animation-delay: 2.9s;
}

.bubble:nth-child(15) {
    width: 26px;
    height: 22px;
    left: 52%;
    animation-duration: 4.9s;
    animation-delay: 4.2s;
}



@keyframes moveUp {
    0% {
        bottom: 0;
    }

    100% {
        bottom: calc(100% - 265px);
    }
}